I've had a red scat in my tank for 2 months now and its not that big. He would chase my fishes around but never nipped on the fins. I added a figure 8 yesterday and now he is started to nip in the tail fins of my mono's and one of them only has half a fin left. Has anyone ever had issues with red scats or any suggestions to get him to stop? I'm thinking bout taking him back to the LFS.